rattle one’s sabre;sharpen one’s knife (/sword); whet one’s swords ? 敵軍已經(jīng)～，隨時準(zhǔn)備向我們發(fā)動進(jìn)攻。我們怎能掉以輕心？ The enemy troops have sharpened their swords and are ready to attack us at any time. How can we let down our vigilance. ? 小弟聞姊來，～向豬羊。(《木蘭詩》) When her little brother heard that his sister had come，丨He sharpened his knife and darted like a flash丨Towards the pigs and sheep.